A Study on Thermal Fatigue Behavior of Al-Si-Mg Casting Alloys

Xiu Hai Zhang; Can Wei Lai; Man Feng Xian; Guang Cai Su

doi:10.4028/www.scientific.net/AMR.881-883.1355

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Effects of Sm and Nd on Microstructure and Properties of AZ81 Magnesium Alloy
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The Effect of Cr Addition on the Microstructure of TiNi: First-Principles Calculations
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The Purification of ZL114A Alloy by Means of Bubble Floatation
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Study of Damage Limit for Aluminum Alloy Plates with Surface Cracks under Cross-Thickness Bending
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 881-883A Study on Thermal Fatigue Behavior of Al-Si-Mg...

A Study on Thermal Fatigue Behavior of Al-Si-Mg Casting Alloys

Abstract:

The thermal fatigue behaviors of traditional Al-Si-Mg casting alloy and optimized Al-Si-Mg casting alloys at different thermal fatigue temperatures were investigated. Fatigue cracking appeared on the surface of traditional Al-Si-Mg alloy after 450 thermal cycles at 300 °C thermal fatigue temperature. However, the fatigue cracking was not found on the surface of optimized Al-Si-Mg alloy at the limited thermal fatigue cycles (less than 4450 times). Moreover, the optimized Al-Si-Mg alloy only occurred to elastic deformation and could not emerge in irreversible deformation. The grain refinement in the optimized Al-Si-Mg alloy could make the thermal fatigue cracking appeared much later and propagated much slowly. These results showed that the thermal fatigue resistance of optimized Al-Si-Mg alloy was superior to that of traditional Al-Si-Mg alloy.

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Periodical:

Advanced Materials Research (Volumes 881-883)

Pages:

1355-1360

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.881-883.1355

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Online since:

January 2014

Authors:

Xiu Hai Zhang, Can Wei Lai, Man Feng Xian, Guang Cai Su

Keywords:

Al-Si-Mg Alloy, Casting, Fractography, Thermal Fatigue

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